Kapp Niles KX 160

New Kapp Niles KX 160 machines typically range from $500,000 to $750,000 depending on CBN vs. conventional wheel configuration, dressing system options, in-process measurement systems, and automation. A fully automated cell with ring loader and integrated measurement can approach $900,000. Used KX 160 units are rare; when available, they typically sell for $300,000-$500,000 due to the specialized nature of the market.

Profile grinding uses a wheel dressed to the exact tooth space profile and grinds one tooth at a time, providing maximum control over profile and lead modifications. Generating grinding uses a threaded wheel that grinds all teeth in a continuous process, which is faster for high volumes of standard gears. Profile grinding excels for complex modifications, small lots, and internal gears. The KX 160 uses profile grinding, which is ideal for its target applications.

CBN wheels offer 3-5x faster cycle times, longer wheel life, and more consistent quality over the wheel's lifetime compared to conventional vitrified wheels. However, CBN wheels cost significantly more upfront ($5,000-$15,000 per wheel vs. $500-$2,000 for conventional). For high-volume production, CBN pays for itself quickly. For prototype work and small batches with frequent profile changes, conventional wheels are more economical since they can be re-dressed to new profiles.

The Reishauer RZ 260 is a generating (threaded wheel) grinding machine optimized for high-volume production. It can be faster on large batches of standard gears. The Kapp Niles KX 160 uses profile grinding, which offers more flexibility for complex modifications, internal gears, and small-lot production. For automotive mass production of 500,000+ identical gears annually, the Reishauer may be faster. For mixed production and quality-critical applications, the Kapp Niles is more versatile.

Yes, the KX 160 can grind internal gear teeth, which is a significant advantage of profile grinding over generating grinding. Internal gears are common in planetary gear sets used in automotive transmissions and industrial reducers. The machine accommodates internal gear diameters within its working envelope, though the minimum bore diameter for internal grinding is constrained by wheel access. This capability is one reason many transmission manufacturers choose profile grinding.

The KX 160 achieves gear flank surface finishes of Ra 0.2-0.4 micrometers with conventional grinding and Ra 0.1-0.2 micrometers with CBN grinding using optimized parameters. For applications requiring even finer finishes, a subsequent superfinishing or honing operation may be used. The direct-drive spindle and vibration-damped machine structure contribute to achieving these finishes consistently across production batches.